Lake Desmet (North Dam)

Lake Desmet (North Dam) Quick Facts

Location: Johnson, Wyoming
Coordinates: 44.517, -106.782
River: Piney And Rock Creek River
Primary Purpose: Water Supply
Type: Earth
Commissioned: 1975
Dam Height: 80 ft (24 m)
Dam Length: 4,000 ft (1,219 m)
Dam Capacity: 234,987 acre-ft (289,852 Ml)
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Lake Desmet (North Dam) Map

Lake Desmet (North Dam) Information

Lake Desmet (North Dam) is an earthen embankment dam located about 14 miles from Ucross, Johnson, Wyoming.

The dam, which is on the Piney And Rock Creek River, was primarily built for Water Supply purposes, but also serves for benefits.

The dam was designed by and commissioned in 1975 and is currently owned by JOHNSON COUNTY-LAKE DESMET OPERATING DEPT.

Lake Desmet (North Dam) Structure

The Lake Desmet (North Dam) is approximately 4,000 feet (1,219 m) long, 80 feet (24 m) high and has a structural volume of 33,800 cubic yards (25,842 cubic metres).

Lake Desmet (North Dam) Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 111,827 acre-ft (137,936 Ml) and maximum capacity of 234,987 acre-ft (289,852 Ml).

The surface area of the reservoir is 2,653 acres (1,074 ha) and the total catchment area is 41 square miles (105 square kilometres).

Lake Desmet (North Dam) Spillway

The dam has a 200 feet (61 m) wide uncontrolled spillway with a maximum discharge capacity of 8520 cubic feet per second (241 cubic metres per second).

Lake Desmet (North Dam) Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Lake Desmet (North Dam)
Johnson, Wyoming
Height (ft)
80
Length (Ft)
4,000
Storage Volume (acre-ft)
234,987
Drainage Area (sq miles)
41
Hoover Dam
Clark County, Nevada
Height (ft)
730
Length (Ft)
1,244
Storage Volume (acre-ft)
30,237,000
Drainage Area (sq miles)
167,800
Grand Coulee Dam
Okanogan County, Washington
Height (ft)
550
Length (Ft)
5,673
Storage Volume (acre-ft)
9,562,0000
Drainage Area (sq miles)
74,100
Theodore Roosevelt Dam
Maricopa County, Arizona
Height (ft)
357
Length (Ft)
1,208
Storage Volume (acre-ft)
3,411,500
Drainage Area (sq miles)
5,736
Oroville Dam
Butte County, California
Height (ft)
235
Length (Ft)
6,920
Storage Volume (acre-ft)
3,540,000
Drainage Area (sq miles)
3,611
Glen Canyon Dam
Coconino County, Arizona
Height (ft)
216
Length (Ft)
1,565
Storage Volume (acre-ft)
29,875,000
Drainage Area (sq miles)
108,355

Lake Desmet (North Dam) Weather

Current Conditions at Lake Desmet (North Dam)

Parameter Value
Current Time 19:41
Sunrise 07:00
Sunset 16:42
Temperature (°F) 35
Feels Like (°F) 26
Cloud Coverage (%) 100
Pressure (inHg) 1013
Humidity (%) 85
Wind Speed (mph) 14
Rain (mm) 0

7-Day Forecast for Lake Desmet (North Dam)

Day Min Temp (°F) Max Temp (°F) Feels Like (°F) Pressure (inHg) Humidity (%) Wind Speed (mph) Wind Gust (mph) Wind Dir Precip Prob (%) Precip Volume (mm) Weather
Today 34 47 38 1004 46 25 33 NW 99 - snow
Wed 30 49 42 1013 26 9 15 SSE 0 - clear sky
Thu 39 55 49 1009 22 10 26 WNW 0 - scattered clouds
Fri 35 48 44 1006 37 9 15 NW 0 - overcast clouds
Sat 30 38 28 1012 70 13 22 NW 0 - overcast clouds
Sun 27 52 46 1003 13 7 10 SE 0 - clear sky
Mon 27 37 24 1008 88 17 28 NW 100 1 rain and snow
Tue 25 31 18 1019 51 23 38 NW 73 - light snow

Lake Desmet (North Dam) Frequently Asked Questions

In which state is the Lake Desmet (North Dam)?

Lake Desmet (North Dam) is in Wyoming.

In which county is the Lake Desmet (North Dam)?

Lake Desmet (North Dam) is in Johnson County.

How high is the Lake Desmet (North Dam)?

Lake Desmet (North Dam) is 80 feet high.

How long is the Lake Desmet (North Dam)?

Lake Desmet (North Dam) is 4,000 feet long.

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More Dams in Johnson County:

(New) Olathe Lake Dam
Big Horn Dike A
Chambers Creek WS SCS Site 42 Dam
Coralville Dam
Dardanelle Nursery Pond Dam
Healy Dam
Holden New City Reservoir Dam
Kearney Lake Dam
Lackey Branch Slurry Impoundment Dam
Lake Desmet (A,B,C & Spillway Dikes)
Lake Desmet (North Dam)
Lake Desmet (South Dam)
Lake Macbride Dam
Lake Pat Cleburne Dam
Lamb Lake Estates Dam
West Buffalo Creek WS SCS Site 1 Dam
Willow Park Dam

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams

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